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Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
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Auditory cortical plasticity in cochlear implant users.

Erin Glennon1, Mario A Svirsky1, Robert C Froemke2

  • 1Skirball Institute for Biomolecular Medicine, New York University School of Medicine, New York, NY, USA; Neuroscience Institute, New York University School of Medicine, New York, NY, USA; Department of Otolaryngology, New York University School of Medicine, New York, NY, USA; Department of Neuroscience and Physiology, New York University School of Medicine, New York, NY, USA.

Current Opinion in Neurobiology
|December 22, 2019
PubMed
Summary
This summary is machine-generated.

Central plasticity significantly impacts cochlear implant (CI) success, but the exact neural mechanisms remain unclear. This review explores how brain plasticity influences CI learning and outcomes in deaf patients.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Auditory Neuroscience

Background:

  • Cochlear implants (CIs) are advanced neuroprosthetic devices enabling speech perception in profoundly deaf individuals.
  • Significant variability exists in patient outcomes despite CI technological advancements.
  • Central plasticity is hypothesized to be a key factor influencing this outcome variability.

Purpose of the Study:

  • To review existing human and animal research on the role of central plasticity in cochlear implant outcomes.
  • To elucidate the neural mechanisms by which brain plasticity affects cochlear implant learning.
  • To understand the extent of plasticity's influence on the benefits derived from cochlear implants.

Main Methods:

  • Comprehensive review of human and animal studies investigating central plasticity and cochlear implants.
  • Analysis of research focusing on three primary mechanisms through which central plasticity impacts CI outcomes.
  • Synthesis of findings to identify knowledge gaps in neural mechanisms and plasticity's influence.

Main Results:

  • Central plasticity plays a crucial role in the success of cochlear implant rehabilitation.
  • Specific neural pathways and mechanisms linking plasticity to CI learning are being uncovered.
  • The degree of central plasticity correlates with the level of benefit experienced by CI users.

Conclusions:

  • Understanding central plasticity is essential for optimizing cochlear implant efficacy.
  • Further research into the neural underpinnings of plasticity is needed to personalize CI therapy.
  • Targeting central plasticity mechanisms may improve speech perception and reduce outcome variability in cochlear implant recipients.